Lock



Patented Aug. 9, 1932 SANFORD c. session, or

Tar

I-IARTFGRD, CONNECTICUT LOCK Application filed May 31,

My invention relates to that class of devices which are employed to prevent unauthorized use of various mechanisms or devices, such as means for controlling flow of electric current, means for securing doors or other closures, and the like, and an object of my in "vention, among others, is to produce a lock which, when compared with the results attained, will be comparatively simple in construction and particularly eflicient in operation.

One form of a lock embodying my invention and in the construction and use of which the objects herein set out, as well as others, may

be attained, is illustrated in the accompanying drawings, in which- Figure l is a face view of my improved lock. I

Figure 2 is a view in section on a plane denoted by the dotted line 2-2 of Figure 1.

Figure 3 is a view in section on a plane denoted by the dotted line 33 of Figure 2.

V v Figure 4 is a view in cross section on a plane denoted bythe dotted line l4 of Figure 3.

Figure 5 is a view in section on a plane denoted by the dotted line '55 of Figure 2,

Figure 6 is a view in section on a plane denoted by the dotted line 6-6 of Figure 2.

Figure 7 is a detail view illustratingthe construction of the setting plugs.

The lock illustrated and described herein and which embodies my invention is equipped for use in connection with the ignition mechanism of an automobile and means are also illustrated whereby the lock may be used for securing a door or other closure. In the accompanying drawings the numeral 10 denotes the lock case that may be of any 011C117 nary construction and composed of any suitable material to contain the lock mechanism. In order to render the lock extremely difficult to operate, except in the manner indicated, I have embodied two types of lock mechanism therein, to wit one of the combination'type and one of the pin tumbler type, each to perform certain functions but both of which must be operated before the final action of the lock takes place. In the structure herein" shown the combination section of the lock so controls the pin tumbler section that the latter cannot 1938.. Serial No. esrssa function for releasing operation until it has been released by the combination section, anoi the latter cannot function in a locking oper-' ation until-the members ofthe pin tumbler section have been properly positioned.

The pin tumbler section of the lock 001111 prises a plug 11 fitted in a socket in a block 12 at one end of the case, this block being of any ordinary construction embodying pin tumblers 13 arranged in the plug and block as is usual in this type of lock. The lock herein shown is equipped with means for protecting the ignition mechanism as of an automobile and the plug is therefore provided with a contact 14 arranged, in the rotation of the plug, to contact with a terminal 15 for making and breaking an electric circuit. It

' will be obvious that the plug may readily be provided with any ordinary means for oper-' ating locking bolts or similar devices, an illustration of one of such mechanisms being hereinafter set forth in connection with another rotatable member to be hereinafter described. It will, of course, be understood that the plug has the usual slot to receive a key for positioning the tumblers and rotating the plug. 1

Operation of the plug 11 is governed by .7

means of a controllerlo rotatably mounted at one end in the block 12 and at its opposite end in a filling block 17, said blocks being secured against each other, as shown in Figures 2 and 4:, and the inner end of the plug 11 also being mounted in the block 17. Intermeshing gears on the plug 11 and on said con- 8 troller effect operation of the latter by the former, The controller has a plug holder recess 18 for the reception of tumblers 19 projecting from tumbler actuating plates 20 in a manner to be hereinafter described.

The combination section of the lock comprises supporting plates 21 for guide posts 22, which plates are secured in any suitable man-- ner to the sides or ends, or both, of the case, these plates being spaced a suitable distance from the top and bottom of the case and as shown in Figure 2. Said posts 22 extend across the case in the direction of depth thereof and have supporting sleeves 24 mounted pins 30 of the push pin type, each pin being each of said plates, with the exception of that located opposite the'controlle'r 16, has anefX-T tension 27 from which the tumbler projects in position for entrance into the recess 18:"

Each of the plates 20 has a set of slots 28, in

this special structure there being three setsofslots=with four slots to a set, these to receive setting plugs 29 arranged in three sets to correspond with the sets of slots 28,..and

each plugbeing operated by means of setting rigidly connected with. a setting: plug and projectingthrough the face of thecase, .as shown in Figure 1 of the drawings .The plugsz29 arev all duplicates of each other. andare peculiar in that they are simplyreversed in position to eilect the intend- V edtresult. Each plug .has a tumbler actuating cam' 31 and a latch 32 inltheiorm of ahook proj ectingfrom the end and adapted to hook under a catch plate 34 through one of anumberot holes 33 therein, and as-shownin Figure. 2 of the drawings. It will be noted that thetumblers are arranged so that; some will be 'active tumblers, that is, will act inthe unlocking operation, and others will be inacthis figure.

tive, in that they will not. act in such unlockingoperatiomand in the latter case theywill pass freelythroughthe slots 28 without efiect on the plate 20, these inactive tumblers or ,plugs being the three located at the left in Figure 2 and the tumbler or plug located at the right being active, as to the set shown in.

Similarly, the second tumbler from the rightin the next row back and'tlie third from the right'in the next or back row of tumblers or plugs are the active-tumblers (see :Figure- 3) the rest of the'tumblers in" said two v rows being inactive: It will thus" be seen that these plugs, a portion of'each of which acts as-a tumbler, are all of duplicate construction, thereby tending to reduce the cost of production.

scribed it will benoted that if the three push .Mpinsspecifically denoted as ab-c be pushed in each of the plates 20 will be slid back,-

thereby disengaging the tumblers 19- thereon-from the plug holder. recesses-18 in the controller =16.

controller so that it may beoperated by inthecam on the latch 32 engaging an edge of This operation releases the a hole 33 in the catch plate 34 will slide said plate and permit the hook on the latch to pass through said hole, whereupon springs 35 will promptly return the plate to catching position, thereby holding the plug in its inward posit-ion.

This plate 34 has a contact 36 adapted,in

. the movement just described, to touch a contact37, thereby completing an electric circuit through said contact and the arms supporting them, along a wire: 38, alarm 39, wire 40,- batter'y 41, and ground 42, the arm hearing the contact 36 also being grounded. This will set the alarm 39 in action. If a second inactive plug in the same set be pushed in the plate 34 will b'eslid in the manner hereinbe'for'e described, thus-disengagingthe plug being held, just described, but'engagingithe latter. plug and holding it in its inward=po= sition. The alarm will thus continue to sound until-the plate 34 is 'released,'and this canbe accomplished only by actionof a resetting cam-43 on the-plug=11- againsta resetting finger 44 on said plate, this requiring opera tion of the entire lock mechanism in'orderto release the'alarm. a! I When the device is equipped for controlling theignit'io'n ot *a combustion engine a wire 46 may be connected with the contact" 14 on the plug 11,'and the terminal '15" may be connected by a wire 47 with the ignitionmechanism conventionally illustrated tit-48, which mechanism is grounded as at 549 common with the ground 42, and in a manner well understood in devices of this' class. Forroperation-as a'lock for' a-door or other closure Ie'haveshown hereina bolt 50 mounted for sliding movement in the block '17,=thi's' bolt having arslot 51130 receive 'a crank pin'52 projecting fromthe inner end o't-thecon troller 16, and as shown in'F'igures 4- and'6 of the drawings. -Any ordinary" form of" I be directly I connected I with the when. positioned to catch "un'derneath -the plate 34, and as shown in Figuretof the v drawin s. This arovides for 'inwardmov'e -In the operation of the device thus far de--' g l by reasonof thei fact that they are the only onesthat will sound the alarm. These-elon therefore, learn j ustwh'atthe active 'plug s are 3 gated holes may be aptly called dummies;

:In orderto set the lock, as fi'omthe inside of a door,so that itmay not be o erated;-a stop bar 54 is slidably mountedintheease 'undernea'thth'e catch plate 34, thisbar- 1m ingw openings adapted to i register with the openings 33: 1n the u m) zari iii" catch and -gsu poi-tingg plates to permit entrance of the latches 32. When said bar, however, is moved to the left from the position shown in Figure 6, openings in the bar will be moved out of registry with the openings in the plate 21 and 34 and downward movement of the plugs 29 to an effective extent will be prevented and it will not now be possible to operate the lock. The bar 54 is provided with a push pin 55 that may have a spring pressed detent 56 to engage notches in the pin for the purpose of releasably holding it in its barring or unbarring positions.

It will be noted from an examination of Figure 2 that the pins 30- do not have a hearing in the outer wall of the case, but the bearing is in the upper plate 21. This prevents one from determining by wear on the pins which pins are operated to actuate the lock, for the reason that the bearing is in the plate 21 and out of sight and, therefore, the wearing points on the pins are out of sight.

In accordance with the provisions of the patent statutes I have described the principles of operation of my invention, together with the device which I now consider to represent the best embodiment thereof; but I desire to have it understood that the device shown is only illustrative and that the invention may be carried out by other means and applied to uses other than those above set out.

I claim- 1. A look comprising a rotary key oper ated member having pin tumblers, a controlling rotary member coupled to the key operated member, rotatable therewith, and formed with a slot for the reception of the tumblers of a combination lock section, the combination lock section comprising a series of slotted plates arranged in side by side relation and carrying tumblers adapted to engage with the slot in the controlling member, plugs engaging with the slotted portions of said plates to move the latter, other plugs adapted to be moved in said slots without actuating the plates, and means for locking said non-actuating plugs in position.

2. A look of the character described, com prising a pin tumbler unit and a combination unit, the pin tumbler unit including a rotary key operated element and the combination unit including a rotary element geared to the key operated element, rotatable therewith, and slotted for the reception of combination lock tumblers, a series of slotted plates each carrying a tumbler and arranged in side by side relation, cam carrying plugs by which said plates are moved, other plugs adapted to move without actuating the plates, and latching devices to hold said last named plugs in position when moved.

3. A look comprising a pin tumbler unit and a combination unit, said pin tumbler unit including a rotatable member adapted tion and carrying tumblers adapted to engage with a slot in one of said rotatable members, plugs engaged with the slotted portions of said plates to move the latter, plugs adapted to be moved in said slots without actuat ing the plates and means for locking said non-actuating plugs in position when moved.

SANFORD O. GHESIOK. 

